Re: [Openocd-development] SRST TRST have to be buffered?

Thanks! That's good to know. I didn't realize that the STM32 can reset itself, too. That would be problematic. I suppose if I never use low power mode, I can omit both resets. Matthew On 7/22/2011 12:12 PM, Andreas Fritiofson wrote: On Fri, Jul 8, 2011 at 1:19 AM, Matthew Lai

Re: [Openocd-development] SRST TRST have to be buffered?

On Fri, Jul 8, 2011 at 1:19 AM, Matthew Lai cyberf...@wecheer.com wrote: Hello! I'm trying to embed a FT2232D based programmer into my board with a STM32 (Cortex-M3 MCU). I want the programmer to be compatible with jtagkey, so I looked at schematics of compaible designs. I noticed that

Re: [Openocd-development] SRST TRST have to be buffered?

Hello! I'm trying to embed a FT2232D based programmer into my board with a STM32 (Cortex-M3 MCU). I want the programmer to be compatible with jtagkey, so I looked at schematics of compaible designs. I noticed that while the JTAG signals (TCK, TDI, TDO, TMS) are only buffered when

Re: [Openocd-development] SRST TRST have to be buffered?

I'm trying to embed a FT2232D based programmer into my board with a STM32 (Cortex-M3 MCU). I want the programmer to be compatible with jtagkey, so I looked at schematics of compaible designs. I noticed that while the JTAG signals (TCK, TDI, TDO, TMS) are

Re: [Openocd-development] SRST TRST have to be buffered?

I see. Thanks for the clarifications! I understand the purposes of the buffers much better now. Matthew On 7/8/2011 12:50 AM, Laurent Gauch wrote: Hello! I'm trying to embed a FT2232D based programmer into my board with a STM32 (Cortex-M3 MCU). I want the programmer to be compatible with

Re: [Openocd-development] SRST TRST have to be buffered?

Ah! I see. I guess it's fine as long as OpenOCD either tristates or drive high the reset lines when it's not doing anything. Is that the case? Thanks! Matthew On 7/8/2011 9:51 AM, Phil Fong wrote: ** I'm

Re: [Openocd-development] SRST TRST have to be buffered?

the srst line will be held high or low according to the interface you're using. the ADBUS on the minimodule is like the flyswatter: X X SRST X TMS TDO TDI TCK(AD7 to AD0) the minimodule inits the srst line high. srst line is ADBUS5, so that's nSRST = 0x20 if only srst is used during reset,

[Openocd-development] SRST TRST have to be buffered?

Hello! I'm trying to embed a FT2232D based programmer into my board with a STM32 (Cortex-M3 MCU). I want the programmer to be compatible with jtagkey, so I looked at schematics of compaible designs. I noticed that while the JTAG signals (TCK, TDI, TDO, TMS) are only buffered when